| /**************************************************************************** |
| **************************************************************************** |
| *** |
| *** This header was automatically generated from a Linux kernel header |
| *** of the same name, to make information necessary for userspace to |
| *** call into the kernel available to libc. It contains only constants, |
| *** structures, and macros generated from the original header, and thus, |
| *** contains no copyrightable information. |
| *** |
| **************************************************************************** |
| ****************************************************************************/ |
| #ifndef __ASM_SPINLOCK_H |
| #define __ASM_SPINLOCK_H |
| |
| #if __LINUX_ARM_ARCH__ < 6 |
| #error SMP not supported on pre-ARMv6 CPUs |
| #endif |
| |
| #define __raw_spin_is_locked(x) ((x)->lock != 0) |
| #define __raw_spin_unlock_wait(lock) do { while (__raw_spin_is_locked(lock)) cpu_relax(); } while (0) |
| |
| #define __raw_spin_lock_flags(lock, flags) __raw_spin_lock(lock) |
| |
| #define rwlock_is_locked(x) (*((volatile unsigned int *)(x)) != 0) |
| #define __raw_write_can_lock(x) ((x)->lock == 0x80000000) |
| #define __raw_read_can_lock(x) ((x)->lock < 0x80000000) |
| #endif |
